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(public_vALLOc): Try other arenas in case _int_valloc fails. (public_pVALLOc): Likewise.

This commit is contained in:
Ulrich Drepper 2008-09-12 18:18:25 +00:00
parent 6c16111214
commit dba385512d
1 changed files with 51 additions and 6 deletions
malloc
malloc.c

57
malloc/malloc.c
View File

@ -3800,17 +3800,39 @@ public_vALLOc(size_t bytes)
if(__malloc_initialized < 0)
ptmalloc_init ();
size_t pagesz = mp_.pagesize;
__malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,
__const __malloc_ptr_t)) =
__memalign_hook;
if (hook != NULL)
return (*hook)(mp_.pagesize, bytes, RETURN_ADDRESS (0));
return (*hook)(pagesz, bytes, RETURN_ADDRESS (0));
arena_get(ar_ptr, bytes + mp_.pagesize + MINSIZE);
arena_get(ar_ptr, bytes + pagesz + MINSIZE);
if(!ar_ptr)
return 0;
p = _int_valloc(ar_ptr, bytes);
(void)mutex_unlock(&ar_ptr->mutex);
if(!p) {
/* Maybe the failure is due to running out of mmapped areas. */
if(ar_ptr != &main_arena) {
(void)mutex_lock(&main_arena.mutex);
p = _int_memalign(&main_arena, pagesz, bytes);
(void)mutex_unlock(&main_arena.mutex);
} else {
#if USE_ARENAS
/* ... or sbrk() has failed and there is still a chance to mmap() */
ar_ptr = arena_get2(ar_ptr->next ? ar_ptr : 0, bytes);
if(ar_ptr) {
p = _int_memalign(ar_ptr, pagesz, bytes);
(void)mutex_unlock(&ar_ptr->mutex);
}
#endif
}
}
assert(!p || chunk_is_mmapped(mem2chunk(p)) ||
ar_ptr == arena_for_chunk(mem2chunk(p)));
return p;
}
@ -3823,17 +3845,40 @@ public_pVALLOc(size_t bytes)
if(__malloc_initialized < 0)
ptmalloc_init ();
size_t pagesz = mp_.pagesize;
size_t page_mask = mp_.pagesize - 1;
size_t rounded_bytes = (bytes + page_mask) & ~(page_mask);
__malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,
__const __malloc_ptr_t)) =
__memalign_hook;
if (hook != NULL)
return (*hook)(mp_.pagesize,
(bytes + mp_.pagesize - 1) & ~(mp_.pagesize - 1),
RETURN_ADDRESS (0));
return (*hook)(pagesz, rounded_bytes, RETURN_ADDRESS (0));
arena_get(ar_ptr, bytes + 2*mp_.pagesize + MINSIZE);
arena_get(ar_ptr, bytes + 2*pagesz + MINSIZE);
p = _int_pvalloc(ar_ptr, bytes);
(void)mutex_unlock(&ar_ptr->mutex);
if(!p) {
/* Maybe the failure is due to running out of mmapped areas. */
if(ar_ptr != &main_arena) {
(void)mutex_lock(&main_arena.mutex);
p = _int_memalign(&main_arena, pagesz, rounded_bytes);
(void)mutex_unlock(&main_arena.mutex);
} else {
#if USE_ARENAS
/* ... or sbrk() has failed and there is still a chance to mmap() */
ar_ptr = arena_get2(ar_ptr->next ? ar_ptr : 0,
bytes + 2*pagesz + MINSIZE);
if(ar_ptr) {
p = _int_memalign(ar_ptr, pagesz, rounded_bytes);
(void)mutex_unlock(&ar_ptr->mutex);
}
#endif
}
}
assert(!p || chunk_is_mmapped(mem2chunk(p)) ||
ar_ptr == arena_for_chunk(mem2chunk(p)));
return p;
}